Pith Number

pith:R52Z6KQA

pith:2009:R52Z6KQAMKW6FVW3KEOFA3NHFV

not attested not anchored not stored refs pending

Orbitally modulated dust formation by the WC7+O5 colliding-wind binary WR140

(10) Universidad Nacional Autonoma de Mexico, (2) Dept of physics, (3) SIRTF Science Center, 4), (4) Herschel Science Centre, (5) Departement de physique, (6) Joint Astronomy Centre, (7) National Research Council of Canada, 8), (8) Ingenieria y Servicios Aeroespaciales SA, (9) INAF - Osservatorio Astrofisico di Arcetri, A. F. J. Moffat (5), A. P. Marston (3, Astronomy, Caltech, DRAO, Ensenada), ESAC, Firenze, Hilo, Instituto de Astronomia, IPAC, L. Morbidelli (9), M. R. Kidger (4, M. Tapia (10) ((1) Institute for Astronomy, Penticton, P. M. Williams (1), S. M. Dougherty (7), S. V. Marchenko (2), Universite de Montreal, University of Edinburgh, Villafranca del Castillo, Western Kentucky University, W. P. Varricatt (6)

arxiv:0902.4540 v1 · 2009-02-26 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R52Z6KQAMKW6FVW3KEOFA3NHFV}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:35:00.807569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f759f2a0062ade2d6db511c506da72d5d152f242c90875ee6bcfe963a34f9fd

Aliases

arxiv: 0902.4540 · arxiv_version: 0902.4540v1 · doi: 10.48550/arxiv.0902.4540 · pith_short_12: R52Z6KQAMKW6 · pith_short_16: R52Z6KQAMKW6FVW3 · pith_short_8: R52Z6KQA

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/R52Z6KQAMKW6FVW3KEOFA3NHFV \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 8f759f2a0062ade2d6db511c506da72d5d152f242c90875ee6bcfe963a34f9fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d378ec777c5c60f20db19d15f2efce8b91c8544e13590bc58310d891cdead3f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-02-26T09:51:54Z",
    "title_canon_sha256": "10815a023cb6233236553d1d2bc1cbc1896285d05e57b8b0364a5689cee5e788"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.4540",
    "kind": "arxiv",
    "version": 1
  }
}